[impaloligist]

Now that my spare 3.8 is up in the air:

Pilot bushing fits the crank.

The boss for the ball pivot is a little tricky. Is it there, yes. Small block Chevys have two, one up by #5 cyl, and one behind #7. The 3.8 only has the rear one (the one we used in the Malibu). The distance between the bellhousing, and the boss are a little different. The Buick's boss is a little closer to the bell flange than the Chevy. I would be inclined to see the engine in a Buick or G-body before getting the mechanical linkage, just to see how the bracket would line up to the boss. This boss isn't drilled, and would have to be tapped also, with a blunt tap being careful not to drill into the oil gallery. Cast iron is easy to drill, but it has to be straight, or the bellcrank, and related linkage rods might bind up. And of course, you could always use a hydraulic clutch. During the rebuild, you'll have to figure out which flywheel will be of the correct weight to work.

And finally, It doesn't look like the exhaust would be in the way. Mine still has stock exhaust manifolds.